Introduction: For text operations, there are more operations besides cutting and pasting, especially when the GUI is not used. In this article, the author explains how to use the gun text toolkit for text processing. After learning this article, you
Defining functions in shell can modularize the code and facilitate code reuse. However, the scope of the variables in the script itself and the variables in the function may be confusing to you. Here, let's take a look at this issue.
(1) The
Linux Command Line has powerful functions. For skilled Linux system administrators, they only need to combine various techniques to form a complex command to complete user tasks.
How can a complicated Linux Command be made up? The following
This article describes how to write a Linux Command Line utility that is simple enough for end users. This article begins with an overview of reliable command line best practices and ends with a detailed study of an effective page selection tool,
Linux Command-Class 4, linux Command-4
1. System Management and Maintenance1. pwd: print working directory2. cd: change directory to change or enter the path● Cd ~ /Cd: current user directory; return to the main directory (with spaces in the middle !
Network diagnosis is an important technical task that manages and makes good use of the network to maximize its role. This article briefly describes the hierarchical diagnosis technology, discusses the diagnosis of various router interfaces, and
A colleague asked how to use commands to determine whether the disk is in NTFS format for further command operations, such as converting the disk format or setting file/folder security permissions.
First, you can use diskpart. It can be used as
Network Administrator read-common network commands
If you have played a vro, you will know the abbreviations of the interesting commands in the vro. For example, "sh int" means "show interface ". Now Windows 2000 has a tool similar to the interface
8.1 count disk usage
1. Disk Space is a limited resource.
2 df and du are important commands used in Linux to measure disk usage. df is short for disk free and du is short for disk usage.
3. Find the disk space occupied by a file (or multiple files):
1. History
Linux: Linux Is Not Unix
Unix: it is the predecessor of Linux. Because of the charges, it can only be used by companies and schools. A good guy writes a Linux program after he thinks it is very good at school.
Linux core: A kernel-based
As a system administrator, you may often need to check which users are active in the system. Sometimes you even need to know what they are doing. This article summarizes four methods for viewing system user information (by ID.
1. Run the w command
What is Disk Partition Alignment and Partition Alignment)
A Windows disk has a structure called Master Boot Record (MBR). Its default size is 63 blocks and each size is 512 bytes ). Its existence makes the initial position of the disk and the
Python uses the dis module to decompile Python into bytecode for detailed usage, dispython
Dis-Disassembler for Python bytecode, that is, decompiling python code into bytecode instructions.Easy to use:
python -m dis xxx.py
Python code is first
12 basic knowledge commonly used in python programming: Regular Expression replacement, Directory Traversal method, list sorting by column, deduplication, Dictionary sorting, Dictionary, list, String Conversion, time object operations, Command Line
Linux File Management
Content outline:# Basic concepts of file system and Shell# File and directory operation commands# VI usage# Manage software packagesI. Basic concepts of file system and Shell1. File System DescriptionA file system is a system
Dialog UNIX :! $ # @ * %
Dialog UNIX :! $ # @ * %Learn more command line skills and operatorsBetter understanding of UNIX®The "strange" characters entered by the user. Learn how to use pipelines, redirection, operators, and other features in
Users who frequently use Linux must have a good understanding of Linux commands. The command line method of Linux has powerful functions. Maybe you know some simple commands. How can a complicated advanced command line of Linux be formed? The
If you have played a vro, you will know the abbreviations of the interesting commands in the vro.For example, "Sh int" means "show interface ".Now Windows 2000 has a tool similar to the interface called netsh.
In the CMD shell of Windows 2000, enter
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